ECOLOGICAL INVESTIGATIONS OF ICE WORMS ON CASEMENT GLACIER, SOUTHEASTERN ALASKA. Institute of Polar Studies Report No. 39.

Goodman, D. J.

doi:10.2172/4569201

Cited by 28 publications

(48 citation statements)

References 19 publications

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“…They were particularly abundant on the red snow surface and were likely feeding on the algae [Goodman, 1971]. The ice worms usually appeared only from evening to morning on the surface.…”

Section: Field Observations Of Snow Algae and Spectral Reflectancementioning

confidence: 99%

“…These pigments are considered to be protection against strong solar radiation on the snow surface [e.g., Bidigare et al, 1993]. Snow algae represent primary producers in most glacial ecosystems [e.g., Goodman, 1971;Kohshima, 1987Kohshima, , 1994Hoham and Duval, 2001]. They sustain cold-tolerant animal and bacterial communities on snow fields and glaciers.…”

Section: Introductionmentioning

confidence: 99%

“…They sustain cold-tolerant animal and bacterial communities on snow fields and glaciers. For example, snow algae sustain ice worms and collembola living on North American glaciers and midges and copepods on Himalayan glaciers [e.g., Goodman, 1971;Shain et al, 2001;Kohshima, 1994]. Basic information about snow algae populations, such as their geographic distribution and seasonal change, is important for understanding their unique ecology in the extremely cold environments they inhabit.…”

Section: Introductionmentioning

confidence: 99%

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Spatial distribution and abundance of red snow algae on the Harding Icefield, Alaska derived from a satellite image

Takeuchi

Dial

Kohshima

et al. 2006

Geophysical Research Letters

112

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[1] Red snow caused by algal bloom is common on glaciers and snowfields worldwide. Description of spatial distributions of snow algal blooms is important for understanding snow algae's unique life in an extremely cold environment and for determining the effect of algae through the reduction of surface albedo. Here we present the spatial distribution of red snow algae on the Harding Icefield, Alaska retrieved from a satellite image. Field observations on the icefield conducted in August 2001 revealed visible red snow, particularly near the snowline. Field measurements of spectral reflectance on the surface revealed the specific spectral absorption of algal pigments. We found a significant correlation between snow algal biomass and a reflectance ratio of SPOT (Satellite Probatoire d' Observation de la Terre) satellite band of wavelength 610 -680 nm to band 500-590 nm. Using this relationship between the reflectance ratio and algal biomass, we estimated the distribution and abundance of red snow across the icefield using a SPOT satellite image. The spatial distribution of red snow on the icefield obtained by mapping the reflectance ratio matched field observations across the icefield with more red algal blooms on the continental than the maritime side of the icefield. Area averaged mean carbon content estimated from the red algal biomass for the icefield on the image was 1.2 kg km À2 .

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“…They were particularly abundant on the red snow surface and were likely feeding on the algae [Goodman, 1971]. The ice worms usually appeared only from evening to morning on the surface.…”

Section: Field Observations Of Snow Algae and Spectral Reflectancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spatial distribution and abundance of red snow algae on the Harding Icefield, Alaska derived from a satellite image

Takeuchi

Dial

Kohshima

et al. 2006

Geophysical Research Letters

112

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“…Insects and tree detritus are commonly observed at lower elevations on glaciers and living organisms, including ice worms (Goodman, 1971) and algae, inhabit the snow and ice (Thomas, 1972;Wharton and Vinyard, 1983). The by-products and decay of the organisms and detritus contribute organic acids to the snow and subsequently to the glacier and glacial streams.…”

Section: Originmentioning

confidence: 99%

Effect of Snow and Firn Hydrology on the Physical and Chemical Characteristics of Glacial Runoff

Fountain

1996

Hydrol. Process.

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Near-surface processes on glaciers, including water flow over bare ice and through seasonal snow and firn, have a significant effect on the speed, volume and chemistry of water flow through the glacier. The transient nature of the seasonal snow profoundly affects the water discharge and chemistry. Water flow through snow is fairly slow compared with flow over bare ice and a thinning snowpack on a glacier decreases the delay between peak meltwater input and peak stream discharge. Furthermore, early spring melt flushes the snowpack of solutes and by mid-summer the melt water flowing into the glacier is fairly clean by comparison. The firn, a relatively constant feature of glaciers, attenuates variations in water drainage into the glacier by temporarily storing water in saturated layer. Bare ice exerts opposite influences by accentuating variations in runoff by water flowing over the ice surface. The melt of firn and ice contributes relatively clean (solute-free) water to the glacier water system.

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“…Snow and ice algae usually play a role as primary producers in the ecosystems. They sustain heterotrophic communities such as insects, ice worms, yeast, and bacteria (e.g., Goodman, 1971;Kohshima, 1984;Kikuchi, 1994;Aitchison, 2001;Hoham and Duval, 2001). The community of these organisms has particular characteristics associated with the physical and chemical condition of the glaciers.…”

Section: Introductionmentioning

confidence: 99%

A Snow Algal Community on Tyndall Glacier in the Southern Patagonia Icefield, Chile

Takeuchi

Kohshima

2004

Arctic, Antarctic, and Alpine Research

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ECOLOGICAL INVESTIGATIONS OF ICE WORMS ON CASEMENT GLACIER, SOUTHEASTERN ALASKA. Institute of Polar Studies Report No. 39.

Cited by 28 publications

References 19 publications

Spatial distribution and abundance of red snow algae on the Harding Icefield, Alaska derived from a satellite image

Spatial distribution and abundance of red snow algae on the Harding Icefield, Alaska derived from a satellite image

Effect of Snow and Firn Hydrology on the Physical and Chemical Characteristics of Glacial Runoff

A Snow Algal Community on Tyndall Glacier in the Southern Patagonia Icefield, Chile

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